//! Public-facing page routes visible to all visitors.

pub(crate) mod content;
mod discover;
mod docs;
mod feed;
mod health;
pub(crate) mod join_wizard;
pub(crate) mod landing;
mod sitemap;
mod two_factor;

use axum::{
    extract::State,
    response::{IntoResponse, Redirect},
    routing::get,
};
use tower_sessions::Session;

use crate::{
    auth::MaybeUserUnverified,
    constants,
    csrf::{post_csrf_skip, with_csrf_skip, CsrfRouter},
    db,
    error::Result,
    helpers::get_csrf_token,
    templates::*,
    types::*,
    AppState,
};

use tower_governor::GovernorLayer;

/// Register public page routes.
pub fn public_routes() -> CsrfRouter<AppState> {
    let twofa_rate_limit = crate::helpers::rate_limiter_ms(constants::TWO_FACTOR_RATE_LIMIT_MS, constants::TWO_FACTOR_RATE_LIMIT_BURST);
    let join_rate_limit = crate::helpers::rate_limiter_ms(constants::AUTH_RATE_LIMIT_MS, constants::AUTH_RATE_LIMIT_BURST);
    // Per-IP read limiter for the unauthenticated discover SEARCH endpoints —
    // these run ILIKE / tag-tree queries per request and are the genuine
    // DoS-amplification surface among the public GETs (Run #12 Security MINOR).
    // The cheap, cached content-page GETs (/u, /p, /i, ...) are left to
    // Cloudflare edge limiting. Burst is generous (API read tier) so legitimate
    // type-ahead on /discover/suggestions isn't throttled. One shared bucket per
    // IP across the three search routes.
    let search_rate_limit = crate::helpers::rate_limiter_ms(constants::API_READ_RATE_LIMIT_MS, constants::API_READ_RATE_LIMIT_BURST);

    CsrfRouter::new()
        .route_get("/", get(landing::index))
        .route_get("/library", get(landing::library))
        .route_get("/cart", get(landing::cart_page))
        .route_get("/library/tabs/purchases", get(landing::library_tab_purchases))
        .route_get("/library/tabs/feed", get(landing::library_tab_feed))
        .route_get("/library/tabs/collections", get(landing::library_tab_collections))
        .route_get("/library/tabs/contacts", get(landing::library_tab_contacts))
        .route_get("/library/tabs/communities", get(landing::library_tab_communities))
        .route_get("/health", get(health::health))
        .route_get("/api/health", get(health::health_json))
        .route_get("/robots.txt", get(sitemap::robots_txt))
        .route_get("/sitemap.xml", get(sitemap::sitemap_xml))
        // NOTE: GET /login is registered in auth_routes() alongside POST /login
        // to avoid Axum merge conflicts that strip rate limiting layers.
        // Join wizard
        .route_get("/join", get(join_wizard::wizard_page))
        .route(
            "/join/step/account",
            post_csrf_skip(
                "join-wizard step 1: pre-auth signup",
                join_wizard::step_account_create,
            )
                .layer(GovernorLayer { config: join_rate_limit }),
        )
        .route(
            "/join/step/{step}",
            with_csrf_skip(
                "join-wizard: continuation of pre-auth flow",
                get(join_wizard::step_load).post(join_wizard::step_save),
            ),
        )
        .route_get("/discover", get(discover::discover))
        .route_get("/discover/results", get(discover::discover_results).layer(GovernorLayer { config: search_rate_limit.clone() }))
        .route_get("/discover/suggestions", get(discover::search_suggestions_handler).layer(GovernorLayer { config: search_rate_limit.clone() }))
        .route_get("/discover/tags", get(discover::tag_tree).layer(GovernorLayer { config: search_rate_limit }))
        .route_get("/feed", get(feed::feed_page))
        .route_get("/u/{username}", get(content::user_page))
        .route_get("/c/{username}/{slug}", get(content::collection_page))
        .route_get("/p/{slug}", get(content::project_page))
        .route_get("/i/{item_id}", get(content::item_page))
        .route_get("/l/{item_id}", get(content::library_page))
        .route_get("/purchase/{item_id}", get(content::purchase_page))
        .route_get("/receipt/{transaction_id}", get(content::receipt_page))
        .route_get("/buy/{item_id}", get(content::buy_page))
        .route_get("/pricing", get(landing::pricing_page))
        .route_get("/checkout/complete", get(landing::checkout_complete))
        .route_get("/use-cases", get(landing::use_cases_page))
        .route_get("/team", get(landing::team_page))
        .route_get("/policy", get(landing::policy_page))
        .route_get("/fan-plus", get(landing::fan_plus_page))
        .route_get("/creators", get(creators_page))
        .route_get("/docs", get(docs::docs_index))
        .route_get("/docs/search.json", get(docs::docs_search_index))
        // Platform economics renders as Askama (live runway disclosure); the
        // markdown source is gone. Served top-level at /economics alongside the
        // other landing pages. The old /docs/economics URL 301s here for
        // continuity and must register BEFORE the catch-all `/docs/{slug}` so
        // axum prefers the exact match.
        .route_get("/economics", get(landing::economics_page))
        .route_get("/docs/economics", get(|| async { Redirect::permanent("/economics") }))
        .route_get("/docs/{slug}", get(docs::doc_page))
        // Two-factor authentication
        .route_get("/auth/2fa", get(two_factor::two_factor_page))
        .route(
            "/auth/verify-2fa",
            post_csrf_skip(
                "2FA verification: pre-promotion to full auth, no session yet",
                two_factor::verify_two_factor,
            )
                .layer(GovernorLayer { config: twofa_rate_limit }),
        )
}

/// Render the public creators page showing invite waves and waitlist stats.
#[tracing::instrument(skip_all, name = "pages::creators_page")]
async fn creators_page(
    State(state): State<AppState>,
    session: Session,
    MaybeUserUnverified(maybe_user): MaybeUserUnverified,
) -> Result<impl IntoResponse> {
    let csrf_token = get_csrf_token(&session).await;

    let waves = db::waitlist::get_all_waves(&state.db).await?;
    let total_creators = db::waitlist::count_active_creators(&state.db).await? as u32;
    let waitlist_pending = db::waitlist::count_waitlist_pending(&state.db).await? as u32;

    let is_creator = maybe_user.as_ref().map(|u| u.can_create_projects).unwrap_or(false);

    let wave_stats: Vec<WaveStats> = waves.iter().map(WaveStats::from).collect();

    Ok(CreatorsTemplate {
        csrf_token,
        session_user: maybe_user,
        waves: wave_stats,
        total_creators,
        waitlist_pending,
        is_creator,
        tier_prices: state.tier_prices.clone(),
    })
}